ORA-12570: TNS packet reader failure

Hi,

Sometimes You can get “ORA-12570: TNS:packet reader failure” error.

 

Details of error are as follows.

ORA-12570: TNS:packet reader failure
Cause: An error occurred during a data receive.
Action: Not normally visible to the user. For further details, turn on tracing and reexecute the operation. If error persists, contact Oracle Customer Support.

 

 

This error may be related with the Firewall settings.

To solve this error, Disable the firewall in Windows or Linux reading the following post.

https://ittutorial.org/oracle-linux-firewall-disable/

 

 

 

 

Do you want to learn more details about RMAN, then read the following articles.

https://ittutorial.org/rman-backup-restore-and-recovery-tutorials-for-beginners-in-the-oracle-database/

 

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About Mehmet Salih Deveci

I am Founder of SysDBASoft IT and IT Tutorial and Certified Expert about Oracle & SQL Server database, Goldengate, Exadata Machine, Oracle Database Appliance administrator with 10+years experience.I have OCA, OCP, OCE RAC Expert Certificates I have worked 100+ Banking, Insurance, Finance, Telco and etc. clients as a Consultant, Insource or Outsource.I have done 200+ Operations in this clients such as Exadata Installation & PoC & Migration & Upgrade, Oracle & SQL Server Database Upgrade, Oracle RAC Installation, SQL Server AlwaysOn Installation, Database Migration, Disaster Recovery, Backup Restore, Performance Tuning, Periodic Healthchecks.I have done 2000+ Table replication with Goldengate or SQL Server Replication tool for DWH Databases in many clients.If you need Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS Consultancy and Training you can send my email adress [email protected].-                                                                                                                                                                                                                                                 -Oracle DBA, SQL Server DBA, APPS DBA,  Exadata, Goldengate, EBS ve linux Danışmanlık ve Eğitim için  [email protected] a mail atabilirsiniz.

One comment

  1. Unable to Process ORA-12570: Network Session: Unexpected packet read error
    at Oracle.ManagedDataAccess.Client.OracleException.HandleError(OracleTraceLevel level, OracleTraceTag tag, Exception ex, OracleLogicalTransaction oracleLogicalTransaction)
    at OracleInternal.TTC.TTCExecuteSql.ReceiveExecuteResponse(Accessor[]& defineAccessors, Accessor[] bindAccessors, Boolean bHasReturningParams, SQLMetaData& sqlMetaData, SqlStatementType statementType, Int64 noOfRowsFetchedLastTime, Int32 noOfRowsToFetch, Int32& noOfRowsFetched, Int64& queryId, Int32 longFetchSize, Int64 initialLOBFetchSize, Int64[] scnFromExecution, Boolean bAllInputBinds, Int32 arrayBindCount, DataUnmarshaller& dataUnmarshaller, MarshalBindParameterValueHelper& marshalBindParamsHelper, Int64[]& rowsAffectedByArrayBind, Boolean bDefineDone, Boolean& bMoreThanOneRowAffectedByDmlWithRetClause, List`1& implicitRSList, Boolean bLOBArrayFetchRequired)
    at OracleInternal.ServiceObjects.OracleCommandImpl.ExecuteReader(String commandText, OracleParameterCollection paramColl, CommandType commandType, OracleConnectionImpl connectionImpl, OracleDataReaderImpl& rdrImpl, Int32 longFetchSize, Int64 clientInitialLOBFS, OracleDependencyImpl orclDependencyImpl, Int64[] scnForExecution, Int64[]& scnFromExecution, OracleParameterCollection& bindByPositionParamColl, Boolean& bBindParamPresent, Int64& internalInitialLOBFS, OracleException& exceptionForArrayBindDML, Boolean isDescribeOnly, Boolean isFromEF)
    at Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteReader(Boolean requery, Boolean fillRequest, CommandBehavior behavior)
    at Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteReader()
    at Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteScalar()

    Unable to Process Oracle error ORA-12571 encountered
    at Oracle.ManagedDataAccess.Client.OracleException.HandleError(OracleTraceLevel level, OracleTraceTag tag, Exception ex, OracleLogicalTransaction oracleLogicalTransaction)
    at OracleInternal.TTC.TTCExecuteSql.WriteOall8Message(Byte[] sqlStmtByteStream, Int32 cursorId, Int64 dbChangeRegistrationId, Int64 executeOptions, ColumnDescribeInfo[] colDefinesInfoArray, Int32 longFetchSize, Int32 arrayBindCount, Int32 numDefineCols, Int64 noOfRowsToFetch, SqlStatementType stmtType, MarshalBindParameterValueHelper& marshalBindParamsHelper, Int32 startIndex)
    at OracleInternal.TTC.TTCExecuteSql.SendExecuteRequest(OracleConnectionImpl commImpl, Byte[] sqlStmtByteStream, Boolean bHasReturningClause, Int32 cursorId, Int64 dbChangeRegistrationId, ColumnDescribeInfo[] columnDefines, Int64 noOfRowsToFetch, Boolean parse, Boolean execute, Boolean fetch, Boolean define, Boolean bAutoCommit, Boolean bDisableCompressedFetch, SqlStatementType stmtType, Int32 longFetchSize, Int32 arrayBindCount, Int64[] scnForSnapshot, MarshalBindParameterValueHelper& marshalBindParamsHelper, Int32 startIndex)
    at OracleInternal.ServiceObjects.OracleCommandImpl.ExecuteReader(String commandText, OracleParameterCollection paramColl, CommandType commandType, OracleConnectionImpl connectionImpl, OracleDataReaderImpl& rdrImpl, Int32 longFetchSize, Int64 clientInitialLOBFS, OracleDependencyImpl orclDependencyImpl, Int64[] scnForExecution, Int64[]& scnFromExecution, OracleParameterCollection& bindByPositionParamColl, Boolean& bBindParamPresent, Int64& internalInitialLOBFS, OracleException& exceptionForArrayBindDML, Boolean isDescribeOnly, Boolean isFromEF)
    at Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteReader(Boolean requery, Boolean fillRequest, CommandBehavior behavior)
    at Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteReader()
    at Oracle.ManagedDataAccess.Client.OracleCommand.ExecuteScalar()

    Above mentioned error occurred every day once. I need to restart the application. This application is hosted on linux server. Kindly guide for the same

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